2,4-PYRIDINECARBOXYLIC ACID, 4-METHYL ESTER 2,4-Pyridinedicarboxylic acid Dimethyl 2,4-pyridinedicarboxylate 3,5-DIHYDROXYPYRIDINE PYRIDINE-3,4-DICARBOXYLIC ANHYDRIDE CHROMAN-4-YLAMINE Bispyrithione 2-(ETHOXYCARBONYL)ISONICOTINIC ACID 4-Carbamoylpicolinic acid 4,4'-(1H-1,2,4-Triazole-3,5-diyl)dipyridine